How long does the the sun hane intill it explode?

Answer 1

Probably about 4 billion years in the future, when the Sun expands into a red giant star. Mercury and Venus will almost certainly be destroyed when the Sun engulfs them, but we're not sure about the Earth. Certainly the Earth will be unlivable.

Answer 2

When the sun expands into a red giant some astrophysicists estimate it will swallow the earth, while others think it will be close, but not quite that big. Either way, kiss Mercury and Venus good bye.

We have another 4 to 5 billion years before that happens, though perhaps only a little more than a billion before the sun grows too hot for life as we know it.

Answer 3

In something over 4 billion years (we can't be too sure of the exact date) the Sun will expand into a red giant. When that happens, it will consume Mercury and Venus; we're not sure about the Earth.

Long before that happens, however, the Earth will be a dry and barren place. This is NOT "global warming" in the usual sense, but a much longer term phenomenon: the Sun is very gradually getting hotter, which makes the Earth hotter. By about two billion years from now, astronomers think it will be impossible for liquid water to exist on Earth's surface.

Answer 4

Our Sun is not big enough to explode, so we don't need to worry about that.

In about 4 billion years or so, the Sun _will_ expand into a red giant, as it switches from hydrogen fusion to helium fusion. At that time, the Sun will expand to consume Mercury and probably Venus, and possibly the Earth as well.

Answer 5

We cannot be sure that it will be. In about 4.5 billion years, we expect our Sun to go into a red giant phase, and will probably expand out to engulf Mercury and Venus; we can't be certain about Earth.

But that's a long way off. Perhaps we'll move the Earth out to the orbit of Jupiter before then.

Answer 6

Not for about another 5 billion years.

But don't hold me to that.... it's not precise ;-)

Answer 7

We expect that the Sun will continue very much as it is now for about 4-5 billion years before expanding into a red giant.

Answer 8

In about 5 billion years.

Answer 9

Not for another four billion years.